Canis ferox is a species of canid which was endemic to North America and lived during the Late Miocene and Early Pliocene, existing for approximately 5 million years. The first fossil was found in Rancho Viejo, Guanajuato . Researchers estimated that their weight could be between 13.3 kg and 14.3 kg, based on the Legendre and Roth correlations. Paleontologists Miller and Carranza-Castaneda noted that their skull resembled that of an ancestral coyote, Canis lepophagus. However, this species had other characteristics similar to Eucyon davisi, belonging to a different genus of canids. These characteristics suggest that Canis ferox marks the beginning of the cladogenesis of the genus Canis.
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